If you are experiencing problems downloading PDF or HTML fulltext, our helpdesk recommend clearing your browser cache and trying again. If you need help in clearing your cache, please click here . Still need help? Email help@ingentaconnect.com

Anisotropic Scattering of Elongated GaSb/GaAs Quantum Dots Embedded Near Two-Dimensional Electron Gas

$113.00 plus tax (Refund Policy)

Buy Article:

Abstract:

Geometrically anisotropic GaSb/GaAs quantum dots elongated along [110] direction, with a lateral aspect ratio of 2∼3, are embedded in the vicinity of AlGaAs/GaAs two-dimensional electron gas, using the molecular beam epitaxy by carefully controlling the Sb4 beam flux and As4 background pressure. The electron mobilities μ , μ parallel and perpendicular to the direction of dot elongation axis are measured as functions of electron concentration n 2D at 4.2 K, respectively. As the increase of n 2D, the mobility discrepancy (μ μ ) is found to be getting larger. This mobility difference is believed to be due to the anisotropic scattering potential of the elongated GaSb quantum dots. Under Born approximation, we propose a model with the constant squared-barrier potential to calculate the n 2D dependence of mobility and reasonable agreement is achieved between the experimental results and theoretical simulation.

Keywords: ANISOTROPIC TRANSPORT; GASB QUANTUM DOTS; LOW TEMPERATURE TRANSPORT; TWO-DIMENSIONAL ELECTRON GAS

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2011.3980

Publication date: December 1, 2011

More about this publication?
  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • Terms & Conditions
  • ingentaconnect is not responsible for the content or availability of external websites
Related content

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more